/* ============================================================
   株式会社ピグナ コーポレートサイト
   スタイル: ミニマル / 上質 / 余白重視
   ============================================================ */

/* ---------- Reset & Base ---------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --color-bg: #fafaf8;
  --color-white: #ffffff;
  --color-black: #111111;
  --color-gray-dark: #333333;
  --color-gray: #888888;
  --color-gray-light: #e8e8e4;
  --color-gray-pale: #f5f5f2;
  --color-accent: #9a8c7e;
  --color-accent-light: #d4cdc6;

  --font-en: 'Montserrat', sans-serif;
  --font-en-serif: 'Cormorant Garamond', serif;
  --font-ja: 'Noto Sans JP', sans-serif;

  --max-width: 1200px;
  --section-py: 120px;
  --header-h: 80px;

  --transition: 0.4s ease;
  --transition-slow: 0.8s ease;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-ja);
  background-color: var(--color-bg);
  color: var(--color-black);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

a {
  color: inherit;
  text-decoration: none;
  transition: opacity var(--transition);
}

a:hover {
  opacity: 0.7;
}

ul {
  list-style: none;
}

/* ---------- Container ---------- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 40px;
}

/* ---------- Section Common ---------- */
.section-label {
  font-family: var(--font-en);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 16px;
}

.section-title {
  font-family: var(--font-ja);
  font-size: clamp(24px, 3vw, 36px);
  font-weight: 300;
  letter-spacing: 0.05em;
  line-height: 1.4;
  color: var(--color-black);
}

.section-desc {
  margin-top: 20px;
  font-size: 15px;
  color: var(--color-gray);
  line-height: 1.9;
}

.section-head {
  text-align: center;
  margin-bottom: 72px;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-block;
  padding: 16px 40px;
  font-family: var(--font-ja);
  font-size: 13px;
  font-weight: 400;
  letter-spacing: 0.12em;
  border: 1px solid currentColor;
  cursor: pointer;
  transition: all 0.3s ease;
  text-align: center;
}

.btn-primary {
  background: var(--color-black);
  color: var(--color-white);
  border-color: var(--color-black);
}

.btn-primary:hover {
  background: transparent;
  color: var(--color-black);
  opacity: 1;
}

.btn-outline {
  background: transparent;
  color: var(--color-white);
  border-color: rgba(255,255,255,0.6);
}

.btn-outline:hover {
  background: rgba(255,255,255,0.1);
  border-color: var(--color-white);
  opacity: 1;
}

.btn-white {
  background: var(--color-white);
  color: var(--color-black);
  border-color: var(--color-white);
}

.btn-white:hover {
  background: transparent;
  color: var(--color-white);
  border-color: var(--color-white);
  opacity: 1;
}

/* ---------- Reveal Animation ---------- */
.reveal, .fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal.visible, .fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

.delay-1 { transition-delay: 0.15s; }
.delay-2 { transition-delay: 0.3s; }
.delay-3 { transition-delay: 0.45s; }
.delay-4 { transition-delay: 0.6s; }

/* ============================================================
   HEADER
   ============================================================ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-h);
  transition: background var(--transition), box-shadow var(--transition);
}

.site-header.scrolled {
  background: rgba(250, 250, 248, 0.96);
  backdrop-filter: blur(10px);
  box-shadow: 0 1px 0 rgba(0,0,0,0.06);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  padding: 0 40px;
  max-width: var(--max-width);
  margin: 0 auto;
}

.logo {
  display: flex;
  flex-direction: column;
  gap: 2px;
  text-decoration: none;
  opacity: 1 !important;
}

.logo .logo-en {
  font-family: var(--font-en);
  font-size: 22px;
  font-weight: 600;
  letter-spacing: 0.15em;
  color: var(--color-white);
  transition: color var(--transition);
  line-height: 1;
}

.logo .logo-ja {
  font-family: var(--font-ja);
  font-size: 10px;
  font-weight: 300;
  letter-spacing: 0.1em;
  color: rgba(255,255,255,0.7);
  transition: color var(--transition);
  line-height: 1;
}

.site-header.scrolled .logo .logo-en {
  color: var(--color-black);
}

.site-header.scrolled .logo .logo-ja {
  color: var(--color-gray);
}

.global-nav ul {
  display: flex;
  gap: 40px;
  align-items: center;
}

.global-nav ul li a {
  font-family: var(--font-en);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.85);
  transition: color var(--transition), opacity var(--transition);
}

.global-nav ul li a:hover {
  color: var(--color-white);
  opacity: 1;
}

.site-header.scrolled .global-nav ul li a {
  color: var(--color-gray-dark);
}

.site-header.scrolled .global-nav ul li a:hover {
  color: var(--color-black);
}

.nav-cta {
  border: 1px solid rgba(255,255,255,0.5) !important;
  padding: 8px 20px !important;
  transition: all var(--transition) !important;
}

.nav-cta:hover {
  background: rgba(255,255,255,0.1) !important;
  opacity: 1 !important;
}

.site-header.scrolled .nav-cta {
  border-color: var(--color-black) !important;
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 6px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 1px;
  background: var(--color-white);
  transition: all var(--transition);
}

.site-header.scrolled .hamburger span {
  background: var(--color-black);
}

/* Mobile Nav */
.mobile-nav {
  position: fixed;
  top: var(--header-h);
  left: 0;
  right: 0;
  background: var(--color-white);
  z-index: 99;
  padding: 32px 40px;
  transform: translateY(-110%);
  transition: transform 0.4s ease;
  border-bottom: 1px solid var(--color-gray-light);
}

.mobile-nav.open {
  transform: translateY(0);
}

.mobile-nav ul {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.mobile-nav ul li a {
  font-family: var(--font-en);
  font-size: 13px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-black);
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: #111;
}

.hero-bg {
  position: absolute;
  inset: 0;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(10, 10, 10, 0.75) 0%,
    rgba(10, 10, 10, 0.55) 50%,
    rgba(10, 10, 10, 0.45) 100%
  );
  z-index: 1;
}

.hero-visual {
  position: absolute;
  inset: 0;
}

.hero-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  grid-template-rows: 1fr 1fr;
  height: 100%;
  gap: 2px;
}

.hero-img-block {
  overflow: hidden;
}

.hero-img-block img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 8s ease;
}

.hero-img-block:hover img {
  transform: scale(1.05);
}

.hero-img-1 {
  grid-row: 1 / 3;
}

.hero-img-2 {
  grid-row: 1;
}

.hero-img-3 {
  grid-row: 2;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 700px;
  padding: 120px 80px;
}

.hero-eyebrow {
  font-family: var(--font-en);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--color-accent-light);
  margin-bottom: 28px;
}

.hero-headline {
  font-family: var(--font-ja);
  font-size: clamp(36px, 5vw, 60px);
  font-weight: 300;
  line-height: 1.4;
  letter-spacing: 0.04em;
  color: var(--color-white);
  margin-bottom: 28px;
}

.hero-sub {
  font-family: var(--font-ja);
  font-size: 15px;
  font-weight: 300;
  line-height: 1.9;
  color: rgba(255,255,255,0.8);
  margin-bottom: 48px;
}

.hero-cta {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}

.hero-scroll {
  position: absolute;
  bottom: 40px;
  left: 80px;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 16px;
  color: rgba(255,255,255,0.5);
  font-family: var(--font-en);
  font-size: 10px;
  letter-spacing: 0.2em;
}

.scroll-line {
  width: 60px;
  height: 1px;
  background: rgba(255,255,255,0.3);
  position: relative;
  overflow: hidden;
}

.scroll-line::after {
  content: '';
  position: absolute;
  left: -100%;
  top: 0;
  width: 100%;
  height: 100%;
  background: rgba(255,255,255,0.8);
  animation: scrollLine 2s infinite;
}

@keyframes scrollLine {
  0% { left: -100%; }
  100% { left: 100%; }
}

/* ============================================================
   INTRO
   ============================================================ */
.intro {
  padding: var(--section-py) 0;
  background: var(--color-white);
}

.intro-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.intro-headline {
  font-family: var(--font-ja);
  font-size: clamp(22px, 2.8vw, 34px);
  font-weight: 300;
  line-height: 1.6;
  letter-spacing: 0.04em;
  color: var(--color-black);
  margin-bottom: 32px;
  margin-top: 12px;
}

.intro-body {
  font-size: 14px;
  line-height: 2;
  color: var(--color-gray-dark);
}

.intro-visual {
  overflow: hidden;
}

.intro-visual img {
  width: 100%;
  aspect-ratio: 4/5;
  object-fit: cover;
  transition: transform 0.8s ease;
}

.intro-visual:hover img {
  transform: scale(1.04);
}

/* ============================================================
   SERVICE
   ============================================================ */
.service {
  padding: var(--section-py) 0;
  background: var(--color-gray-pale);
}

.service-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.service-card {
  background: var(--color-white);
  overflow: hidden;
  transition: transform 0.4s ease, box-shadow 0.4s ease;
}

.service-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 60px rgba(0,0,0,0.08);
}

.service-card--main .service-card__img {
  overflow: hidden;
  height: 260px;
}

.service-card--main .service-card__img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.8s ease;
}

.service-card--main:hover .service-card__img img {
  transform: scale(1.05);
}

.service-card__body {
  padding: 36px;
}

.service-card__num {
  font-family: var(--font-en);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.2em;
  color: var(--color-accent);
  padding: 24px 36px 0;
}

.service-card__title {
  font-family: var(--font-ja);
  font-size: 20px;
  font-weight: 400;
  letter-spacing: 0.04em;
  color: var(--color-black);
  margin-bottom: 6px;
}

.service-card__tag {
  font-family: var(--font-en);
  font-size: 10px;
  font-weight: 400;
  letter-spacing: 0.15em;
  color: var(--color-accent);
  margin-bottom: 16px;
}

.service-card__text {
  font-size: 13px;
  line-height: 1.9;
  color: var(--color-gray-dark);
  margin-bottom: 24px;
}

.service-card__list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.service-card__list li {
  font-size: 12px;
  color: var(--color-gray);
  padding-left: 16px;
  position: relative;
}

.service-card__list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 8px;
  height: 1px;
  background: var(--color-accent);
}

/* Sub cards */
.service-card--sub {
  display: flex;
  align-items: flex-start;
  gap: 0;
}

.service-card--sub .service-card__num {
  padding: 36px 24px 0 36px;
  white-space: nowrap;
}

.service-card--sub .service-card__body {
  padding: 36px 36px 36px 0;
}

.service-card--sub .service-card__title {
  font-size: 17px;
  margin-bottom: 12px;
}

/* ============================================================
   STRENGTH
   ============================================================ */
.strength {
  padding: var(--section-py) 0;
  background: var(--color-white);
}

.strength-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 48px;
  margin-bottom: 80px;
}

.strength-item {
  text-align: center;
}

.strength-item__icon {
  width: 48px;
  height: 48px;
  margin: 0 auto 24px;
  color: var(--color-accent);
}

.strength-item__icon svg {
  width: 100%;
  height: 100%;
}

.strength-item__title {
  font-family: var(--font-ja);
  font-size: 16px;
  font-weight: 400;
  letter-spacing: 0.05em;
  color: var(--color-black);
  margin-bottom: 16px;
}

.strength-item__text {
  font-size: 13px;
  line-height: 1.9;
  color: var(--color-gray-dark);
}

.strength-quote {
  border-top: 1px solid var(--color-gray-light);
  border-bottom: 1px solid var(--color-gray-light);
  padding: 60px 0;
  text-align: center;
}

.strength-quote blockquote p {
  font-family: var(--font-ja);
  font-size: clamp(17px, 2.2vw, 24px);
  font-weight: 300;
  line-height: 1.8;
  letter-spacing: 0.06em;
  color: var(--color-black);
}

/* ============================================================
   WORKS
   ============================================================ */
.works {
  padding: var(--section-py) 0;
  background: var(--color-gray-pale);
}

.works-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
  margin-bottom: 40px;
}

.works-item__img {
  position: relative;
  overflow: hidden;
  aspect-ratio: 4/3;
}

.works-item__img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.8s ease;
}

.works-item:hover .works-item__img img {
  transform: scale(1.08);
}

.works-item__overlay {
  position: absolute;
  inset: 0;
  background: rgba(10,10,10,0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.4s ease;
}

.works-item:hover .works-item__overlay {
  opacity: 1;
}

.works-item__overlay span {
  font-family: var(--font-en);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-white);
}

.works-item__label {
  margin-top: 12px;
  font-size: 12px;
  color: var(--color-gray);
  letter-spacing: 0.05em;
}

.works-note {
  font-size: 11px;
  color: var(--color-gray);
  text-align: center;
  letter-spacing: 0.05em;
}

/* ============================================================
   FLOW
   ============================================================ */
.flow {
  padding: var(--section-py) 0;
  background: var(--color-white);
}

.flow-list {
  display: flex;
  align-items: stretch;
  gap: 0;
}

.flow-item {
  flex: 1;
  background: var(--color-gray-pale);
  padding: 40px 32px;
  position: relative;
}

.flow-item__num {
  font-family: var(--font-en);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.2em;
  color: var(--color-accent);
  margin-bottom: 20px;
}

.flow-item h3 {
  font-family: var(--font-ja);
  font-size: 15px;
  font-weight: 400;
  letter-spacing: 0.04em;
  color: var(--color-black);
  margin-bottom: 12px;
}

.flow-item p {
  font-size: 12px;
  line-height: 1.8;
  color: var(--color-gray-dark);
}

.flow-arrow {
  width: 2px;
  background: var(--color-gray-light);
  flex-shrink: 0;
}

/* ============================================================
   COMPANY
   ============================================================ */
.company {
  padding: var(--section-py) 0;
  background: var(--color-gray-pale);
}

.company-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 40px;
}

.company-table tr {
  border-bottom: 1px solid var(--color-gray-light);
}

.company-table th,
.company-table td {
  padding: 24px 0;
  font-size: 14px;
  line-height: 1.7;
  text-align: left;
  vertical-align: top;
}

.company-table th {
  width: 200px;
  font-weight: 400;
  color: var(--color-gray);
  font-family: var(--font-ja);
  letter-spacing: 0.04em;
  padding-right: 40px;
}

.company-table td {
  color: var(--color-black);
  font-weight: 300;
}

/* ============================================================
   CONTACT
   ============================================================ */
.contact {
  padding: var(--section-py) 0;
  background: var(--color-black);
}

.contact-inner {
  text-align: center;
}

.contact-headline {
  font-family: var(--font-ja);
  font-size: clamp(24px, 3.5vw, 42px);
  font-weight: 300;
  line-height: 1.5;
  letter-spacing: 0.04em;
  color: var(--color-white);
  margin: 16px 0 28px;
}

.contact-sub {
  font-size: 14px;
  line-height: 1.9;
  color: rgba(255,255,255,0.6);
  margin-bottom: 48px;
}

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
  background: #0a0a0a;
  padding: 60px 0 40px;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  margin-bottom: 32px;
}

.footer-logo {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.footer-logo .logo-en {
  font-family: var(--font-en);
  font-size: 18px;
  font-weight: 600;
  letter-spacing: 0.15em;
  color: var(--color-white);
}

.footer-logo .logo-ja {
  font-family: var(--font-ja);
  font-size: 10px;
  font-weight: 300;
  letter-spacing: 0.1em;
  color: rgba(255,255,255,0.4);
}

.footer-nav {
  display: flex;
  gap: 32px;
}

.footer-nav a {
  font-family: var(--font-en);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.5);
  transition: color var(--transition);
}

.footer-nav a:hover {
  color: var(--color-white);
  opacity: 1;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-address {
  font-family: var(--font-ja);
  font-size: 11px;
  color: rgba(255,255,255,0.3);
  letter-spacing: 0.05em;
}

.copyright {
  font-family: var(--font-en);
  font-size: 10px;
  font-weight: 300;
  letter-spacing: 0.1em;
  color: rgba(255,255,255,0.25);
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
  :root {
    --section-py: 90px;
  }

  .container {
    padding: 0 32px;
  }

  .intro-inner {
    gap: 48px;
  }

  .strength-grid {
    gap: 32px;
  }
}

@media (max-width: 768px) {
  :root {
    --section-py: 72px;
    --header-h: 64px;
  }

  .container {
    padding: 0 24px;
  }

  /* Header */
  .global-nav {
    display: none;
  }

  .hamburger {
    display: flex;
  }

  .header-inner {
    padding: 0 24px;
  }

  /* Hero */
  .hero-content {
    padding: 100px 24px 80px;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    grid-template-rows: 1fr;
  }

  .hero-img-2,
  .hero-img-3 {
    display: none;
  }

  .hero-img-1 {
    grid-row: 1;
  }

  .hero-scroll {
    left: 24px;
    bottom: 32px;
  }

  .hero-cta {
    flex-direction: column;
    gap: 12px;
  }

  .hero-cta .btn {
    width: fit-content;
  }

  /* Intro */
  .intro-inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .intro-visual {
    order: -1;
  }

  /* Service */
  .service-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .service-card--sub {
    flex-direction: column;
  }

  .service-card--sub .service-card__num {
    padding: 24px 36px 0;
  }

  .service-card--sub .service-card__body {
    padding: 16px 36px 36px;
  }

  /* Strength */
  .strength-grid {
    grid-template-columns: 1fr;
    gap: 40px;
    max-width: 480px;
    margin: 0 auto 60px;
  }

  /* Works */
  .works-grid {
    grid-template-columns: 1fr 1fr;
  }

  /* Flow */
  .flow-list {
    flex-direction: column;
    gap: 2px;
  }

  .flow-arrow {
    width: auto;
    height: 2px;
    display: none;
  }

  /* Company */
  .company-table th {
    width: 120px;
    font-size: 13px;
  }

  .company-table td {
    font-size: 13px;
  }

  /* Footer */
  .footer-inner {
    flex-direction: column;
    gap: 32px;
    text-align: center;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }

  .footer-nav {
    gap: 24px;
    flex-wrap: wrap;
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .works-grid {
    grid-template-columns: 1fr;
  }

  .company-table th,
  .company-table td {
    display: block;
    width: 100%;
  }

  .company-table th {
    padding-bottom: 4px;
    padding-top: 20px;
  }

  .company-table td {
    padding-top: 4px;
  }

  .pc-br {
    display: none;
  }
}